思考问题

1.关于dll库的问题！！！！！！！！！！！！

在编写一个关于生成xml文件的脚本时引用了

using System.IO;
using System.Xml;

但是并没有引用using System.Windows.Forms；

使用了_xmlpath = Application.dataPath + "/user.xml";

XmlDocument xmlDoc = new XmlDocument();//xin jian xml shi li
            XmlElement root = xmlDoc.CreateElement("Root");//gen jie dian , zui shang ceng jie dian
            xmlDoc.AppendChild(root);//zhi jie dian
            XmlElement user = xmlDoc.CreateElement("User");//yong hu jie dian

编译运行没错！！！！！最后发布时，报错无法找到 System.Windows.Forms.dll，，，，解决方案是找到PlayerSetting Api Compatibility Level 设置为.net 2.0。。。并且发现在Assets下的Plugins文件夹里是有一个System.Windows.Forms.dll的。

5.MonoBehaviour基类和类的继承和接口的继承。接口一般都是I开头。

using UnityEngine.EventSystems;

public class point_event : MonoBehaviour,IPointerEnterHandler, IPointerExitHandler, IPointerDownHandler, IPointerUpHandler
{
    public Text text1;
    public void OnPointerEnter(PointerEventData eventData)
    {
        text1.text = "OnPointerEnter";
    }
    public void OnPointerExit(PointerEventData eventData)
    {
        text1.text = "OnPointerExit";
    }
    public void OnPointerDown(PointerEventData eventData)
    {
        text1.text = "OnPointerDown";
    }
    public void OnPointerUp(PointerEventData eventData)
    {
        text1.text = "OnPointerUp";
    }

 2.动态窗口，四元数，使窗口能跟随鼠标发生角度变化

public class dynamic_window : MonoBehaviour {
    public Vector2 range = new Vector2(-7f, -5f);//rangge 在面板上参数为-7，-5
    Transform mTrans;
    Quaternion mStart;
    Vector2 mRot = Vector2.zero;
	// Use this for initialization
	void Start () {
        mTrans = transform;
        mStart = mTrans.localRotation;
	}
	
	// Update is called once per frame
	void Update () {
        Vector3 pos = Input.mousePosition;
        float halfWidth = Screen.width * 0.5f;
        float halfHeight = Screen.height * 0.5f;
        float x = Mathf.Clamp((pos.x - halfWidth) / halfWidth, -1f, 1f);
        float y = Mathf.Clamp((pos.y - halfHeight) / halfHeight, -1f, 1f);
        mRot = Vector2.Lerp(mRot, new Vector2(x, y), Time.deltaTime * 5f);
        mTrans.localRotation = mStart * Quaternion.Euler(-mRot.y * range.y, mRot.x * range.x, 0f);
	}